Articles by Author: Phillip J Bishop

Search results for Phillip J Bishop

We found 25 results for you
  1. Acoustic communication and reproductive behaviour in the aquatic frog <em>Xenopus laevis</em> (Pipidae), a field study

    Acoustic communication and reproductive behaviour in the aquatic frog <em>Xenopus laevis</em> (Pipidae), a field study

    Item type: Journal Article • Journal: African Journal of Herpetology
    We studied the acoustic and reproductive behaviour of the clawed frog, Xenopus laevis, in a pond with clear water in South Africa over a period of two months. It contained 21 adult males and females. Each was marked with a...
  2. ACCURACY EVALUATION OF CODE FOR THE CHARACTERISTIC INITIAL VALUE PROBLEM IN GENERAL RELATIVITY

    ACCURACY EVALUATION OF CODE FOR THE CHARACTERISTIC INITIAL VALUE PROBLEM IN GENERAL RELATIVITY

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    The paper describes numerical tests of the accuracy of a general relativity code for the non-rotating axisymmetric characteristic initial value problem. The results compare reasonably well with theoretical expectations.
  3. Lemmatiese en nielemmatiese adressering in Afrikaanse vertalende woordeboeke

    Lemmatiese en nielemmatiese adressering in Afrikaanse vertalende woordeboeke

    Item type: Journal Article • Journal: South African Journal of Linguistics
    Vertalende handwoordeboeke is gerig op 'n oordrag van linguistiese inligting. Die bewerking wat in die artikels van hierdie woordeboeke aangebied word, het meestal die lemma in bestek. Dit staan bekend as 'n prosedure van lemmatiese adressering. Inligting kan ook ander...
  4. Short Notes

    Short Notes

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  5. IMPROVING CHILD AND ADOLESCENT HEALTH THROUGH SCHOOLS: LEARNING FROM AUSTRALIA

    IMPROVING CHILD AND ADOLESCENT HEALTH THROUGH SCHOOLS: LEARNING FROM AUSTRALIA

    Child and adolescent health is a serious concern in South Africa With a growing population of young people with unacceptable levels of mortality, morbidity and risk-taking behaviour, schools should be utilised to address certain health issues.
  6. THE POINCARÉ INEQUALITY FOR A VECTOR FIELD WITH ZERO TANGENTIAL OR NORMAL COMPONENT ON THE BOUNDARY

    THE POINCARÉ INEQUALITY FOR A VECTOR FIELD WITH ZERO TANGENTIAL OR NORMAL COMPONENT ON THE BOUNDARY

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Poincaré's inequality is well known: given a bounded domain G, ∥u∥p ⋚ c∥∇u∥p provided u(x) vanishes on the boundary ∂G. The case where u(x) is a vector field u(x) that does not vanish on the boundary ∂G is considered. It...
  7. OBSERVATIONAL COSMOLOGY AND NUMERICAL RELATIVITY

    OBSERVATIONAL COSMOLOGY AND NUMERICAL RELATIVITY

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    This paper brings together the theory of observational cosmology and the null-cone characteristic initial value problem (CIVP) of numerical relativity. A computer code is constructed which calculates the past behaviour of the Universe from input data that is, in principle,...
  8. COMPARING LARGE-SCALE COSMOLOGICAL DENSITY FLUCTUATIONS

    COMPARING LARGE-SCALE COSMOLOGICAL DENSITY FLUCTUATIONS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Two methods for looking at cosmological density on large scales are briefly described. The first takes galaxies observed in infrared, by the IRAS satellite. The second method, called POTENT by its inventors (Dekel and Bertschinger), uses the observed peculiar motions...
  9. High levels of mitochondrial cytochrome <em>b</em> sequence diversity are present within the <em>Anthus similis</em> complex in sub-Saharan Africa

    High levels of mitochondrial cytochrome <em>b</em> sequence diversity are present within the <em>Anthus similis</em> complex in sub-Saharan Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    The taxonomy of pipits (genus Anthus) in sub-Saharan Africa is poorly understood. We applied mitochondrial cytochrome b (cyt b) sequencing to specimens of the African Long-billed Pipit Anthus similis, using Palearctic A. s. captus for comparison. There was virtually no...